/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package view.common;

import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;

/**
 *
 */
public class JTextFieldLimit extends PlainDocument {

	private static final long serialVersionUID = 1L;

	private int limit;
	// optional uppercase conversion
	private boolean toUppercase = false;

	public JTextFieldLimit(int limit) {
		super();
		this.limit = limit;
	}

	public JTextFieldLimit(int limit, boolean upper) {
		super();
		this.limit = limit;
		toUppercase = upper;
	}

	@Override
	public void insertString(int offset, String str, AttributeSet attr)
			throws BadLocationException {
		if (str == null) {
			return;
		}
		if ((getLength() + str.length()) <= limit) {
			if (toUppercase) {
				str = str.toUpperCase();
			}
			super.insertString(offset, str, attr);
		}
	}
}
